Support optional boot menu and increase power down timeout.

org.jdrupes.vmoperator.runner.qemu/config-sample.yaml

@@ -42,10 +42,13 @@
     #  * secure[-4m]
     # "firmware": "uefi"
     
+    # Whether to show a boot menu.
+    # "bootMenu": false
+    
     # When terminating, a graceful powerdown is attempted. If it
     # doesn't succeed within the given timeout (seconds) SIGTERM
     # is sent to Qemu.
-    # "powerdownTimeout": 60
+    # "powerdownTimeout": 900
     
     # RAM settings
     # "maximumRam": "1G"

org.jdrupes.vmoperator.runner.qemu/src/org/jdrupes/vmoperator/runner/qemu/Configuration.java

@@ -114,6 +114,7 @@ class Configuration implements Dto {
         public String name;
         public String uuid;
         public boolean useTpm;
+        public boolean bootMenu;
         public String firmware = "uefi";
         public BigInteger maximumRam;
         public BigInteger currentRam;
@@ -127,7 +128,7 @@ class Configuration implements Dto {
         public String accelerator = "kvm";
         public String rtcBase = "utc";
         public String rtcClock = "rt";
-        public int powerdownTimeout = 60;
+        public int powerdownTimeout = 900;
         public Network[] network = { new Network() };
         public Drive[] drives;
         public Spice spice;

org.jdrupes.vmoperator.runner.qemu/templates/Standard-VM-latest.ftl.yaml

@@ -67,6 +67,9 @@
     <#if vm.firmware?starts_with("secure")>
     - [ "-global", "driver=cfi.pflash01,property=secure,value=on" ]
     </#if>
+    <#if vm.bootMenu>
+    - [ "-boot", "menu=on" ]
+    </#if>
     # * Provide RAM
     - [ "-object", "memory-backend-ram,id=pc.ram,\
         size=${ (vm.maximumRam!1073741824)?c }" ]